CA1106796A - Method and apparatus for chromium electroplating of bars - Google Patents
Method and apparatus for chromium electroplating of barsInfo
- Publication number
- CA1106796A CA1106796A CA289,028A CA289028A CA1106796A CA 1106796 A CA1106796 A CA 1106796A CA 289028 A CA289028 A CA 289028A CA 1106796 A CA1106796 A CA 1106796A
- Authority
- CA
- Canada
- Prior art keywords
- row
- anode
- bars
- electroplating
- brush means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/22—Electroplating combined with mechanical treatment during the deposition
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
ABSTRACT
An apparatus for electroplating metal barn wherein said bars are mechanically and electrically connected to form an uninterrupted row, includ-ing an anode immersed in an eloctroplating bath substantially surrounding at least a portion of the row while being spaced therefrom, the anode having a longitudinal slot therein, and a stationary brush means mounted to contact the row in the anode; and a method consisting of passing the row through the anode in a straight path while rotating the row about its longitudinal axes, and concurrently slideably forcing the stationary brush means against the row, whereby the surfaces of the bars are continuously cleaned by brush-ing action during electroplating.
An apparatus for electroplating metal barn wherein said bars are mechanically and electrically connected to form an uninterrupted row, includ-ing an anode immersed in an eloctroplating bath substantially surrounding at least a portion of the row while being spaced therefrom, the anode having a longitudinal slot therein, and a stationary brush means mounted to contact the row in the anode; and a method consisting of passing the row through the anode in a straight path while rotating the row about its longitudinal axes, and concurrently slideably forcing the stationary brush means against the row, whereby the surfaces of the bars are continuously cleaned by brush-ing action during electroplating.
Description
6~
The present invention refers to a method and apparatus for chromium electroplating of bars and in particular is meant to attain an improvement aiming at a better process of electrodeposition of chromium ltself.
: Systems are known for continuous electroplating of the surfaces of bars, no matter if solid or hollow, by which cylindrical bars are mechanic-ally and eLectrically connected in an uninterrupted row, which is run through a tubular alode immersed within an electroplating bath.
In the systems formerly known a tendency exists towards the develop-ment on bars of a cathodic film, due -to hydrogen ions which interferes with the plating current flow, and consequently hinders the electrodeposition of chromium.
The removal of such cathodic film would remarkably improve the plating process and the quality of the chromium layer on the bar surface;
anyway the removal of such cathodic film, in the electroplating bath and particularly within the plating anode, becomes complicated because of the difficulty to operate in the restricted space limited by the surfaces of the bars to be plated and the inner surface of the plating anode itself; such difficulty is enhanced by the generally remarkable length of the plating anodes.
At present no system or method is known allowing one -to remove the cathodic film in a continuous chromium plating process for bars.
Therefore, the purpose of the present invention is to furnish a method and an apparatus enabling one to remove the cathodic film in a continuous electroplating process for bars or the like in the portion of-the path through the electroplating anode itself.
In general, the problem of cleaning the bar surfaces is solved by means of a continuous brushing or slightly scraping action along at least one side of the bars in the portion of the path through the elec-tro-~Çi79~
plating anode. Such brushing action is carried on along a generatrix line of bars by means of a stationary brushing device, taking advantage of the rotating movement transmitted to the bar row while it is moving forth.
Preferably such brushing device consists of a blade radially cross-ing the anode and coming into contact with the bar surface along a generatrix line of that surface, at least throughout the length of the electroplating anode.
In an embodiment of the invention, the above mentioned brushing blade consists of a layer of glass fiber or like scraping material compressed between side plates made of acid resistant material from which the glass fibers just protrude as far as necessary to touch the surface of the bars to be cleaned.
The invention will be better illustrated and described hereunder with reference to the figures of the drawings attached, wherein:
Fig. 1 is a part section side view of a chromium electroplating plant for bars, applying the principles of the present invention;
Fig. 2 is a part cutaway top view of the plan-t shown in Fig. l;
; Fig. 3 is a cross-section along line 3-3 of Fig. 1 through the electroplating bath tank;
Fig. 4 is an enlarged side view, partially sectioned, through an electroplating bath tank to show better the details;
Fig. 5 is a cross-section along line 5-5 of Fig. 4;
Fig. 6 is a longitudinal section along line 6-6 of Fig. 4.
With reference now to the only Figures 1 to 3 of the drawings attached, we are going to describe the essential features of a continuous chromium electroplating plant for cylindrical bars, improved in accordance with the present inven-tion.
Essentially the plant includes a tank 1 containing a chromium
The present invention refers to a method and apparatus for chromium electroplating of bars and in particular is meant to attain an improvement aiming at a better process of electrodeposition of chromium ltself.
: Systems are known for continuous electroplating of the surfaces of bars, no matter if solid or hollow, by which cylindrical bars are mechanic-ally and eLectrically connected in an uninterrupted row, which is run through a tubular alode immersed within an electroplating bath.
In the systems formerly known a tendency exists towards the develop-ment on bars of a cathodic film, due -to hydrogen ions which interferes with the plating current flow, and consequently hinders the electrodeposition of chromium.
The removal of such cathodic film would remarkably improve the plating process and the quality of the chromium layer on the bar surface;
anyway the removal of such cathodic film, in the electroplating bath and particularly within the plating anode, becomes complicated because of the difficulty to operate in the restricted space limited by the surfaces of the bars to be plated and the inner surface of the plating anode itself; such difficulty is enhanced by the generally remarkable length of the plating anodes.
At present no system or method is known allowing one -to remove the cathodic film in a continuous chromium plating process for bars.
Therefore, the purpose of the present invention is to furnish a method and an apparatus enabling one to remove the cathodic film in a continuous electroplating process for bars or the like in the portion of-the path through the electroplating anode itself.
In general, the problem of cleaning the bar surfaces is solved by means of a continuous brushing or slightly scraping action along at least one side of the bars in the portion of the path through the elec-tro-~Çi79~
plating anode. Such brushing action is carried on along a generatrix line of bars by means of a stationary brushing device, taking advantage of the rotating movement transmitted to the bar row while it is moving forth.
Preferably such brushing device consists of a blade radially cross-ing the anode and coming into contact with the bar surface along a generatrix line of that surface, at least throughout the length of the electroplating anode.
In an embodiment of the invention, the above mentioned brushing blade consists of a layer of glass fiber or like scraping material compressed between side plates made of acid resistant material from which the glass fibers just protrude as far as necessary to touch the surface of the bars to be cleaned.
The invention will be better illustrated and described hereunder with reference to the figures of the drawings attached, wherein:
Fig. 1 is a part section side view of a chromium electroplating plant for bars, applying the principles of the present invention;
Fig. 2 is a part cutaway top view of the plan-t shown in Fig. l;
; Fig. 3 is a cross-section along line 3-3 of Fig. 1 through the electroplating bath tank;
Fig. 4 is an enlarged side view, partially sectioned, through an electroplating bath tank to show better the details;
Fig. 5 is a cross-section along line 5-5 of Fig. 4;
Fig. 6 is a longitudinal section along line 6-6 of Fig. 4.
With reference now to the only Figures 1 to 3 of the drawings attached, we are going to describe the essential features of a continuous chromium electroplating plant for cylindrical bars, improved in accordance with the present inven-tion.
Essentially the plant includes a tank 1 containing a chromium
- 2 -.
:
plating bath, which is topped by a fume tight exhaust hood 2.
Tank 1 contains a chromium electroplating bath where anode 3 is immersed. Such anode is passed through uninterruptedly by bars 4 to be .
chromium plated. Bars 4 are mechanically and electrically co~nected to one another, thus constituting an uninterrupted row of bars. Seals 5 are located on the two end walls of tank 1 to prevent the plating solution from seeping out of the tank wall openings through which bars pass. The plating electric current is fed to the bar row by means of sliding contact devices 6, shown sehematically on both ends of -the tank 1. These known features of the chromium electroplating plant are not described in more detail since they form no essential part of this invention.
The longitudinal movement of the bar row and the rotation around its own axis can be obtained, for example, by means of the feeding and rotating device shown in Figs. 1 and 2.
Sueh feeding and rotating device, which is not to be understood as a limitation to the present invention, is substantially composed of two self eentering rotating chucks 7 and 8, acting alternatively to tow and rotate the bar row 4. Each chuck is carried by a slide 9 and 10, respectively, which slide on guides 11 lined up with bath tank 1. Mechanical or hydraulic drives are used to move slides 9 and 10 along guides 11 to continuously advance bar row 4. Self centering chucks 7 and 8 are rotated uninterruptedly by driving splined shaft 12 which in turn is driven by reduction unit 13.
In the case shown in Figs. 1 and 2, the drive of slides 9 and 10 supporting the self centering rotating chucks is obtained by means of hydraulic-pneumatic cylinders 14 and respectively 15 which, through racks 16 and 17, provide for the alternating approaching and moving away of the two chuck carrying slides.
Therefore, one of the self centering chucks is connected with bar 4 and is pulling and rotaing it (for example, during the approaching movement of chucks) while the other self centering chuck is disconnected from the bars.
On the other hand, during the reverse movement of the self centering chucks, the chuck which was formerly driving the bars is now disengaged from them while the other chuck drives -the bar row advancing and rotatlng it.
With reference to Fig. 3 and particularly to Figs 4, 5 and 6 of the attached drawings, one can notice that anode 3 does not completely en-circle the section of bar row 4, but leaves a longitudinal opening 18 which is parallel to a generatrix of the bar surface. Therefore, anode 3 extends on both sides with wings 3' which the plating current input terminals are connected to.
As above specified, during the plating process of bar row 4 within tank 1 and particularly along the whole length of anode 3, the hydrogen ions which develop in the bath have a tendency to adhere to the bar surface develop-ing a cathodic film with the aspect of a greasy layer which is difficult to remove and hinders the regular deposition of chromium.
Consequently, the present invention has provided for the cleaning of the bar surface, at least in the portion of the path included within anode
:
plating bath, which is topped by a fume tight exhaust hood 2.
Tank 1 contains a chromium electroplating bath where anode 3 is immersed. Such anode is passed through uninterruptedly by bars 4 to be .
chromium plated. Bars 4 are mechanically and electrically co~nected to one another, thus constituting an uninterrupted row of bars. Seals 5 are located on the two end walls of tank 1 to prevent the plating solution from seeping out of the tank wall openings through which bars pass. The plating electric current is fed to the bar row by means of sliding contact devices 6, shown sehematically on both ends of -the tank 1. These known features of the chromium electroplating plant are not described in more detail since they form no essential part of this invention.
The longitudinal movement of the bar row and the rotation around its own axis can be obtained, for example, by means of the feeding and rotating device shown in Figs. 1 and 2.
Sueh feeding and rotating device, which is not to be understood as a limitation to the present invention, is substantially composed of two self eentering rotating chucks 7 and 8, acting alternatively to tow and rotate the bar row 4. Each chuck is carried by a slide 9 and 10, respectively, which slide on guides 11 lined up with bath tank 1. Mechanical or hydraulic drives are used to move slides 9 and 10 along guides 11 to continuously advance bar row 4. Self centering chucks 7 and 8 are rotated uninterruptedly by driving splined shaft 12 which in turn is driven by reduction unit 13.
In the case shown in Figs. 1 and 2, the drive of slides 9 and 10 supporting the self centering rotating chucks is obtained by means of hydraulic-pneumatic cylinders 14 and respectively 15 which, through racks 16 and 17, provide for the alternating approaching and moving away of the two chuck carrying slides.
Therefore, one of the self centering chucks is connected with bar 4 and is pulling and rotaing it (for example, during the approaching movement of chucks) while the other self centering chuck is disconnected from the bars.
On the other hand, during the reverse movement of the self centering chucks, the chuck which was formerly driving the bars is now disengaged from them while the other chuck drives -the bar row advancing and rotatlng it.
With reference to Fig. 3 and particularly to Figs 4, 5 and 6 of the attached drawings, one can notice that anode 3 does not completely en-circle the section of bar row 4, but leaves a longitudinal opening 18 which is parallel to a generatrix of the bar surface. Therefore, anode 3 extends on both sides with wings 3' which the plating current input terminals are connected to.
As above specified, during the plating process of bar row 4 within tank 1 and particularly along the whole length of anode 3, the hydrogen ions which develop in the bath have a tendency to adhere to the bar surface develop-ing a cathodic film with the aspect of a greasy layer which is difficult to remove and hinders the regular deposition of chromium.
Consequently, the present invention has provided for the cleaning of the bar surface, at least in the portion of the path included within anode
3, by means of a continuous brushing action. Such brushing action is obtained by means of a brushing device 19, wh~ch penetrates within anode 3 through its longitudinal opening 18. More details are given hereunder with reference *o the example of Figs. 4, 5 and 6 in the drawings attached.
Referring to the above mentioned Figures, it can be seen tha-t the brushing device 19 consists of a layer 20 of glass fibers or of glass silk or other equivalent material pressea and, for instance, glued between two ; supporting side plates 21 made of acid resis-tant material, such as polyvinyl . .~ , i ' , chloride, to provide the glass fiber layer 20 with the necessary stiffness.
The glass fiber layer 20 stands out slightly along the lower edge ~ of plates 21, just as indicated by 20', touching with appropriate pressure - the outer surface of bars 4, along a generatrix line of the latter.
The brushing device l9,constituting the cleaning device of bars 4, is guided on its sides in vertical guides 22 which are fixed, for instance, inside the end walls of tank 1 as indicated in Figs. 4 and 6.
As may be understood from what has been stated and illustrated above, the pressure applied by the protruding portion 20' of the fiber layer on the outer surface of bars 4 is mainly due to the weight of blade 19. Any-way, it may be opportune, under special circumstances, to be able to adjust : ~ .
or to modify the intensity of such brushing pressure; for example, due to the fact that the protruding portion 20' of fiber layer 20 gradually wears and that it must be replaced, removing the lower longitudinal edges of , . .
supporting plates 21 reduces the weight of brushing device 19. Therefore, to keep a constant pressure applied by the fibers on -the surface of bar 4 to be cleaned, brushing device 19 is equipped at its top with a cradle 23 on which weights 24 can be placed, as indicated by dashed lines. This way the fiber pressure on the bar surface can be adjusted.
The operation of the apparatus for carrying out the method in accordance with the present invention appears to be fundamentally as follows:
... .
As stated above with reference to Figs. 1 to 3, the row of bars 4 is advanced and rotated at the same time around its own longitudinal axis, as shown e.g. by the arrow of Fig. 5.
Consequently, this rotation applied to -the bar row 4, is taken advantage of, to perform the brushing action and the ensuing cleaning of the bar surface during the plating process.
According to the inyention, the brushing and consequently cleaning 7~
action of the bars should preferably take place also beyond the ends of anode 3, so as to get the bar surface to look clean both before and after the anode ends in the tank 1.
The performance of actual tests have demonstrated that the cleaning action of the bar row surface, inside the electroplating anode 3, not only improves the quality of the chromium layer deposited which is an important factor in the case of hard plating, but also its quantity, thus boosting the productivity of the plant.
: - ~hat has been stated and shown with reference to the Figures of the drawings attached is meant to be only an embodiment of the invention which consists of a method and apparatus for cleaning the bar surface, performed by means of brushing action throughout a portion of the bar path passing through . the electroplating anode.
~ 6 -
Referring to the above mentioned Figures, it can be seen tha-t the brushing device 19 consists of a layer 20 of glass fibers or of glass silk or other equivalent material pressea and, for instance, glued between two ; supporting side plates 21 made of acid resis-tant material, such as polyvinyl . .~ , i ' , chloride, to provide the glass fiber layer 20 with the necessary stiffness.
The glass fiber layer 20 stands out slightly along the lower edge ~ of plates 21, just as indicated by 20', touching with appropriate pressure - the outer surface of bars 4, along a generatrix line of the latter.
The brushing device l9,constituting the cleaning device of bars 4, is guided on its sides in vertical guides 22 which are fixed, for instance, inside the end walls of tank 1 as indicated in Figs. 4 and 6.
As may be understood from what has been stated and illustrated above, the pressure applied by the protruding portion 20' of the fiber layer on the outer surface of bars 4 is mainly due to the weight of blade 19. Any-way, it may be opportune, under special circumstances, to be able to adjust : ~ .
or to modify the intensity of such brushing pressure; for example, due to the fact that the protruding portion 20' of fiber layer 20 gradually wears and that it must be replaced, removing the lower longitudinal edges of , . .
supporting plates 21 reduces the weight of brushing device 19. Therefore, to keep a constant pressure applied by the fibers on -the surface of bar 4 to be cleaned, brushing device 19 is equipped at its top with a cradle 23 on which weights 24 can be placed, as indicated by dashed lines. This way the fiber pressure on the bar surface can be adjusted.
The operation of the apparatus for carrying out the method in accordance with the present invention appears to be fundamentally as follows:
... .
As stated above with reference to Figs. 1 to 3, the row of bars 4 is advanced and rotated at the same time around its own longitudinal axis, as shown e.g. by the arrow of Fig. 5.
Consequently, this rotation applied to -the bar row 4, is taken advantage of, to perform the brushing action and the ensuing cleaning of the bar surface during the plating process.
According to the inyention, the brushing and consequently cleaning 7~
action of the bars should preferably take place also beyond the ends of anode 3, so as to get the bar surface to look clean both before and after the anode ends in the tank 1.
The performance of actual tests have demonstrated that the cleaning action of the bar row surface, inside the electroplating anode 3, not only improves the quality of the chromium layer deposited which is an important factor in the case of hard plating, but also its quantity, thus boosting the productivity of the plant.
: - ~hat has been stated and shown with reference to the Figures of the drawings attached is meant to be only an embodiment of the invention which consists of a method and apparatus for cleaning the bar surface, performed by means of brushing action throughout a portion of the bar path passing through . the electroplating anode.
~ 6 -
Claims (8)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for electroplating metal bars which comprises:
mechanically and electrically connecting said bars to form an uninterrupted row, immersing, in an electroplating bath, an anode adapted to sub-stantially surround at least a portion of said row while being spaced therefrom, said anode having a longitudinal slot, mounting a stationary brush means in said slot adapted to contact said row in the anode, passing said row through the anode in a straight path while ro-tating said row about its longitudinal axes, and concurrently slideably forcing said stationary brush means against said row, whereby the surface of said row is continuously cleaned by a brushing action during electroplating.
mechanically and electrically connecting said bars to form an uninterrupted row, immersing, in an electroplating bath, an anode adapted to sub-stantially surround at least a portion of said row while being spaced therefrom, said anode having a longitudinal slot, mounting a stationary brush means in said slot adapted to contact said row in the anode, passing said row through the anode in a straight path while ro-tating said row about its longitudinal axes, and concurrently slideably forcing said stationary brush means against said row, whereby the surface of said row is continuously cleaned by a brushing action during electroplating.
2. The method of claim 1, wherein the brushing action is performed along the generatrix of said row surface within the anode.
3. The method of claim 1, including keeping a constant pressure between the brushing device and the surface of said row to be cleaned during the brushing action.
4. The method of claim 1, in which the cleaning of the surface of said row is performed in a radial direction.
5. Apparatus for electroplating metal bars comprising a tank containing an electroplating bath, an anode immersed in said bath to substantially surround at least a portion of said bars while being spaced therefrom, a longitudinal slot in said anode, a stationary brush means in said slot adapted to contact at least one of said bars in the anode, actuating means for moving forth in a straight path a row of bars connected mechanically and electrically, and rotating the row around its own longitudinal axis; whereby the surface of the bars is continuously brushed during electroplating.
6. The apparatus of claim 5, in which the brush means slides within vertical guides located within the tank and presses the surface of the bars with its own weight.
7. The apparatus of claim 5 or 6 in which the brush means is provided with a top cradle for supporting weights.
8. The apparatus of claim 5, in which the brush means consists of a layer of fibers glued between two supporting side plates, said layer partially protruding from lower edges of said plates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT28736A/76 | 1976-10-27 | ||
| IT28736/76A IT1069028B (en) | 1976-10-27 | 1976-10-27 | PROCEDURE AND EQUIPMENT FOR THE CHROME PLATING OF BARS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1106796A true CA1106796A (en) | 1981-08-11 |
Family
ID=11224086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA289,028A Expired CA1106796A (en) | 1976-10-27 | 1977-10-19 | Method and apparatus for chromium electroplating of bars |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4176015A (en) |
| JP (1) | JPS5360333A (en) |
| AT (1) | AT351882B (en) |
| BE (1) | BE860094A (en) |
| CA (1) | CA1106796A (en) |
| DE (1) | DE2746373C3 (en) |
| ES (2) | ES475688A1 (en) |
| FR (1) | FR2369358A1 (en) |
| GB (1) | GB1532939A (en) |
| IT (1) | IT1069028B (en) |
| NL (1) | NL183535C (en) |
| SE (1) | SE435842B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1197479B (en) * | 1986-09-12 | 1988-11-30 | Angelini S | Continuous bar electroplating cell |
| IT1205167B (en) * | 1987-06-22 | 1989-03-15 | Angelini S | AUTOMATIC SYSTEM FOR CONTINUOUS ELECTRODEPOSITION TREATMENT ON METAL BARS |
| IT1251691B (en) * | 1991-10-14 | 1995-05-19 | Brev Elettrogalvan Superfinitu | EQUIPMENT SUITABLE FOR CONTINUOUS OPERATION OF THE FORWARD, ROTATION AND ELECTRICAL CONNECTION OF BARS AND SIMILAR IN ELECTROLYTIC DEPOSITION PLANTS. |
| US5608186A (en) * | 1992-01-27 | 1997-03-04 | Thomas & Betts Corporation | Ground rod |
| WO2009045316A1 (en) * | 2007-10-03 | 2009-04-09 | Sifco Selective Plating | Method of plating metal onto titanium |
| JP6601215B2 (en) | 2014-06-17 | 2019-11-06 | 横浜ゴム株式会社 | Pneumatic tire |
| CN112376099B (en) * | 2020-11-16 | 2021-12-10 | 徐州鑫启帆智能科技有限公司 | Roll-to-roll continuous electroplating equipment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE72643C (en) * | R. D. SANDERS in Hartfield House, Eastbourne, Sussex, England | Automatic smoothing or brushing device for processing rotating cylindrical surfaces, especially during their electrolytic deposition | ||
| DE128205C (en) * | ||||
| GB189918643A (en) * | 1899-09-15 | 1900-08-18 | Frederick Hall Snyder | Improvements relating to the Amalgamation and Coating of Metals or Alloys of Metals, with Metals or Alloys of Metals, by the Aid of Electricity, and to Apparatus therefor. |
| US907425A (en) * | 1907-06-29 | 1908-12-22 | Hanson & Van Winkle Company | Electroplating apparatus. |
| US1215354A (en) * | 1912-05-01 | 1917-02-13 | American Bank Note Co | Intaglio printing-plate and the method of making same. |
| US1473060A (en) * | 1921-12-17 | 1923-11-06 | Walter A Zelnicker | Method of electroplating |
| GB300038A (en) * | 1927-12-21 | 1928-11-08 | Kazimierz Baranowski | Improvements in the construction of electro-plating vats or troughs |
| BE758436A (en) * | 1969-06-06 | 1971-04-16 | Angelini S | METHOD AND APPARATUS FOR THE CONTINUOUS THICKNESS CHROMING OF BARS, WIRES AND TUBES OUTSIDE OR INSIDE |
-
1976
- 1976-10-27 IT IT28736/76A patent/IT1069028B/en active
-
1977
- 1977-10-14 GB GB42803/77A patent/GB1532939A/en not_active Expired
- 1977-10-14 DE DE2746373A patent/DE2746373C3/en not_active Expired
- 1977-10-18 FR FR7731246A patent/FR2369358A1/en active Granted
- 1977-10-19 CA CA289,028A patent/CA1106796A/en not_active Expired
- 1977-10-19 US US05/843,553 patent/US4176015A/en not_active Expired - Lifetime
- 1977-10-24 AT AT759377A patent/AT351882B/en not_active IP Right Cessation
- 1977-10-25 JP JP12730677A patent/JPS5360333A/en active Pending
- 1977-10-26 NL NLAANVRAGE7711769,A patent/NL183535C/en not_active IP Right Cessation
- 1977-10-26 SE SE7712066A patent/SE435842B/en not_active IP Right Cessation
- 1977-10-26 ES ES475688A patent/ES475688A1/en not_active Expired
- 1977-10-26 ES ES463914A patent/ES463914A1/en not_active Expired
- 1977-10-26 BE BE2056364A patent/BE860094A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB1532939A (en) | 1978-11-22 |
| ES475688A1 (en) | 1979-12-16 |
| DE2746373A1 (en) | 1978-05-03 |
| DE2746373C3 (en) | 1980-08-21 |
| US4176015A (en) | 1979-11-27 |
| BE860094A (en) | 1978-02-15 |
| IT1069028B (en) | 1985-03-21 |
| NL183535B (en) | 1988-06-16 |
| JPS5360333A (en) | 1978-05-30 |
| NL7711769A (en) | 1978-05-02 |
| NL183535C (en) | 1988-11-16 |
| FR2369358B1 (en) | 1983-07-01 |
| SE7712066L (en) | 1978-04-28 |
| DE2746373B2 (en) | 1979-12-13 |
| ATA759377A (en) | 1979-01-15 |
| SE435842B (en) | 1984-10-22 |
| AT351882B (en) | 1979-08-27 |
| ES463914A1 (en) | 1979-04-16 |
| FR2369358A1 (en) | 1978-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1106796A (en) | Method and apparatus for chromium electroplating of bars | |
| CN208279712U (en) | A kind of electroplating device with impurity removal function | |
| DE2309056B2 (en) | Method and device for the electroforming production of a relatively thin, flexible, endless metal strip | |
| CN110318436B (en) | River sludge dredging treatment equipment | |
| KR101987938B1 (en) | Apparatus for roll scraper of hot dip coating facility | |
| US2075331A (en) | Method and apparatus for the electrodeposition of metal | |
| DE2716805A1 (en) | DEVICE FOR GALVANIC SEPARATION OF ALUMINUM | |
| CN112080771A (en) | Hardware electroplating processing equipment with deoiling mechanism | |
| CN216809357U (en) | Steel wire rope spraying and dip-coating oil device for crane | |
| CN115045131B (en) | Novel marine rope preparation process | |
| CN216909403U (en) | Electroplating solution recovery processing device | |
| EP0374535B1 (en) | Electrolytic processing apparatus for metallic members | |
| KR100554736B1 (en) | An apparatus for removing projection tunic of anode in strip plating shell | |
| CN210560670U (en) | Hot-galvanize stoving pretreatment device | |
| CN205474089U (en) | Conveyer of rack plating production facility | |
| US4632744A (en) | Device for metal strip electrolytic processing | |
| US5589227A (en) | Method for preserving rollers immersed into the molten alloy bath for extending the operating life thereof | |
| KR20090071197A (en) | Plating-bath having apparatus for removing slug | |
| US2055070A (en) | Electroplating apparatus | |
| CN117772507B (en) | Automatic processing equipment is used in inductance material production | |
| DE3519906C1 (en) | Process and apparatus for electroplating a hollow body having variously oriented recesses or re-entrant angles, and application of the process | |
| KR20020001943A (en) | Apparatus for polishing the collector ring of conductive roll | |
| KR101556319B1 (en) | APPARATUS FOR REMOVING Zinc POWDER IN HORIZONTAL TYPE CELL ELECTROGALVANIZING LINE | |
| KR100920602B1 (en) | An apparatus for removing the oxide coat on an anode for strip eletroplating | |
| CN221254745U (en) | Quick copper plating device of welding wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |